The following outline is provided as an overview of and topical guide to extraterrestrial life: Extraterrestrial life – is any type of lifeform, from prokaryotes to intelligent beings, that is neither native of Earth or transplanted from it. So far, no extraterrestrial life has ever been found.
Search Astrobiology Mars Viking lander biological experiments Meteorites Allan Hills 77005 Allan Hills 84001 Murchison meteorite Nakhla meteorite Shergotty meteorite Yamato 000593 Biosignatures Red edge Search for extraterrestrial intelligence Active SETI Allen Telescope Array Pioneer plaque Project Phoenix (SETI) SERENDIP Technosignature Xenoarchaeology Communication with extraterrestrial intelligence Arecibo message Astrolinguistics Wow! signal
Likely requirements Circumstellar habitable zone Extraterrestrial liquid water Planetary habitability
Potential locations Colonization of Europa Habitability of K-type main-sequence star systems Habitability of natural satellites Habitability of red dwarf systems Habitable exoplanet Earth analog Superhabitable planet Life on Mars Life on Titan Life on Venus Life origination beyond planets Catalogs Catalog of Nearby Habitable Systems
Possible traits Extraterrestrial intelligence Alien language Hypothetical types of biochemistry Carbon-based life CHON Extremophile
Ideas Anthropocentrism Carbon chauvinism Copernican principle Cosmic pluralism Drake equation Extraterrestrials in Meitei culture Fermi paradox Aestivation hypothesis Great Filter Rare Earth hypothesis Zoo hypothesis Fine-tuned universe Kardashev scale Dyson sphere Mediocrity principle Potential cultural impact of extraterrestrial contact Exotheology Post-detection policy
Fringe and conspiracy theories Ufology Alien abduction Close encounter Contactee Extraterrestrial hypothesis Men in black UFO religion Ancient astronauts
Extraterrestrial life media Note: Only nonfiction works in this section
Books Alien Oceans Cosmos (Sagan book) Evolving the Alien Extraterrestrial: The First Sign of Intelligent Life Beyond Earth Rare Earth: Why Complex Life Is Uncommon in the Universe Documentaries Cosmos: Possible Worlds
Persons influential in extraterrestrial life Giordano Bruno Carol Cleland Frank Drake Enrico Fermi Michael H. Hart Stephen Hawking Avi Loeb Carl Sagan Peter Ward
Extraterrestrial life in fiction
Extraterrestrials in fiction Alien language in science fiction List of fictional extraterrestrials List of alien races in DC Comics List of alien races in Marvel Comics List of Star Trek aliens List of Star Wars creatures Archetypes Bug-eyed monster Elder race Energy being Grey alien Insectoid Little green men Plots Alien invasion Big Dumb Object First contact Interstellar war Space warfare in science fiction Space travel in science fiction
References